1268751996 has 18 divisors (see below), whose sum is σ = 3207123192. Its totient is φ = 422917320.

The previous prime is 1268751983. The next prime is 1268752003. The reversal of 1268751996 is 6991578621.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17621520 + ... + 17621591.

Almost surely, 2^1268751996 is an apocalyptic number.

It is an amenable number.

1268751996 is an abundant number, since it is smaller than the sum of its proper divisors (1938371196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1268751996 is a wasteful number, since it uses less digits than its factorization.

1268751996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35243121 (or 35243116 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 1268751996 is about 35619.5451402738. The cubic root of 1268751996 is about 1082.5772912115.

The spelling of 1268751996 in words is "one billion, two hundred sixty-eight million, seven hundred fifty-one thousand, nine hundred ninety-six".